Protractor

Front

What is a protractor?

Back

A protractor is a tool used to measure angles in degrees.

Front

What is the range of angles that a protractor can measure?

Back

A protractor can measure angles from 0 degrees to 180 degrees.

Front

How do you use a protractor to measure an angle?

Back

Align the baseline of the protractor with one side of the angle, then read the degree measurement where the other side intersects the protractor.

Front

What is the degree measure of a right angle?

Back

A right angle measures 90 degrees.

Front

What is the degree measure of an acute angle?

Back

An acute angle measures less than 90 degrees.

Front

What is the degree measure of an obtuse angle?

Back

An obtuse angle measures more than 90 degrees but less than 180 degrees.

Front

If an angle measures 85 degrees, is it acute, right, or obtuse?

Back

It is an acute angle.

Front

What is a straight angle?

Back

A straight angle measures exactly 180 degrees.

Front

What is the formula to find the sum of angles in a triangle?

Back

The sum of angles in a triangle is always 180 degrees.

Front

If one angle in a triangle is 90 degrees and another is 45 degrees, what is the measure of the third angle?

Back

The third angle measures 45 degrees.